1 /* 2 * Copyright (C) 2014 Square, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package okio 17 18 import java.io.IOException 19 20 /** A [Sink] which forwards calls to another. Useful for subclassing. */ 21 abstract class ForwardingSink( 22 /** [Sink] to which this instance is delegating. */ 23 @get:JvmName("delegate") 24 val delegate: Sink, 25 ) : Sink { 26 // TODO 'Sink by delegate' once https://youtrack.jetbrains.com/issue/KT-23935 is fixed. 27 28 @Throws(IOException::class) writenull29 override fun write(source: Buffer, byteCount: Long) = delegate.write(source, byteCount) 30 31 @Throws(IOException::class) 32 override fun flush() = delegate.flush() 33 34 override fun timeout() = delegate.timeout() 35 36 @Throws(IOException::class) 37 override fun close() = delegate.close() 38 39 override fun toString() = "${javaClass.simpleName}($delegate)" 40 41 @JvmName("-deprecated_delegate") 42 @Deprecated( 43 message = "moved to val", 44 replaceWith = ReplaceWith(expression = "delegate"), 45 level = DeprecationLevel.ERROR, 46 ) 47 fun delegate() = delegate 48 } 49